<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>后盾人</title>
    <style>
      article {
        width: 300px;
        height: 300px;
        border: solid 5px silver;
        display: grid;
        grid-template-rows: repeat(3, 1fr);
        grid-template-columns: repeat(3, 1fr);
      }

      div {
        /* width: 100px; */
        /* height: 100px; */
        background: blueviolet;
        background-clip: content-box;
        border: solid 1px blueviolet;
        padding: 10px;
        box-sizing: border-box;
      }
    </style>
  </head>

  <body>
    后盾人
    <article>
      <div>1</div>
      <div>2</div>
      <div>3</div>
      <div>4</div>
      <div>5</div>
      <div>6</div>
      <div>7</div>
      <div>8</div>
      <div>9</div>
    </article>
  </body>
</html>
